What is a Johnson Air Rotation® System?



Heating



Specifications for Heating

Heating Unit Features

Heating Efficiency Comparison



Cooling



Specifications for Cooling

Cooling Unit Features

Cooling Efficiency Comparison



Heating & Cooling

Specifications

Unit Features

Efficiency Comparison



Johnson Air Rotation® 
Optional Features



Industry-Specific Applications

 Heating and Cooling Unit Features

The Johnson Air Rotation® System is the most efficient heating and cooling system in the industry. It safely provides uniform temperature and humidity control and delivers long equipment life, a low installation cost, and unparalleled support and customer service.

Johnson Air Rotation® units are constructed of heavy gauge, painted galvanized structural steel and can handle heating capacities up to 7,000,000 BTUH, air volumes up to 200,000 CFM and cooling capacities up to 550 tons. All units are UL® listed and feature a one-year parts warranty.

Fact Sheet
Johnson Air Rotation® Heating and Cooling Unit Features

Standard Features:
  • Cooling capacities up to 500 tons per unit
  • Heating capacities up to 7,000,000 BTUH
  • Air volumes up to 200,000 CFM
  • Heavy18-gauge, painted galvanized structural steel frame construction
  • Stainless steel indirect-fired heat exchanger – 83% combustion efficiency
  • 100% System efficiency
  • Direct expansion or chilled water cooling coils
  • Cooling coils operate in a “draw-through” design.
  • A variety of filtration levels are possible, with standard being 30% efficient pleated
    filters
  • Stainless steel triple pitched condensate drain pan with a single drain
  • Galvanized steel walkway plank for easy maintenance of coils, fans and motors
  • Coils and filters are mounted at floor or ground level for easy maintenance and
    cleaning
  • Horizontal and vertical discharge louvers and turning vanes for air distribution
    control
  • Insulated cabinet
  • Wired and piped at factory (except main regulator and main gas valve)
  • High temperature limit switch; heat on/off switch
  • Flame failure alarm horn (gas and oil units only)
  • Control circuit and power fusing; UV flame detection
  • Low fire start; occupied thermostat
  • Rear fan failure light (double fan units only)
  • Non-fused motor disconnect switch; motor starter and overload protection
  • NEMA 1 power and control panels
  • Single-point power hook-up
  • Long lasting paint finish; hinged access door
  • UL® listed; 1 year parts warranty
  • Factory tested for operation and sound in a UL®-approved Test Data Program
Available Optional Features:
  • Outdoor construction
  • Heating is available with gas, propane, steam, hot water or electric coils
  • Aluminum mesh, pleated and oil mist filters
  • Evaporative cooling systems
  • Humidifier systems can be installed in our equipment.
  • Set back clock
  • Sound reduction package
  • Seismic certifications
Johnson Air Rotation® Systems
  • Customized condensation control package
  • Ultra-violet light for bacterial elimination
  • Make-up air assemblies, make-up air on/off switch
  • Make-up air damper potentiometer; motorized inlet dampers
  • Unoccupied thermostat; smoke detectors
  • FM or IRI manifolds; heat outlet extensions
  • Access platforms
  • UL listed flue system
  • Chillers; condensing units
  • Field startup supervision by factory technician
  • Rigging and installing supervision
  • Burners with outside air combustion collars for hazardous or special applications
  • Extended warranty
1. Most efficient system in the industry
  • Lower temperature rise between inside roof and outdoor temperatures, so
    less heat escapes from the building thus reducing fuel consumption.
  • Utilizes heat generated in the building from lights, machinery, people and
    other sources of heat gain in the space; thus reducing the amount of heat
    required to condition the space.
  • Neutral or positive pressure system maintains the conditioned air in the
    space
  • Fuel consumption is drastically reduced by continuous heating of warmer
    room air versus much colder outside air.
  • Highly efficient fans utilize lower motor horsepower.
  • Most efficient system in industry.
2. Uniform temperature and humidity control
  • Temperatures and humidity within space vary no more then + 1o, 1% RH
  • Eliminates air stratification utilizing any process or solar gains and
    associated condensation associated with stratification.
  • Eliminates drafts and cold or hot spots in the space.
  • Available with condensation control package.
  • Available with factory-installed humidifiers.
  • Controlled temperatures and humidity levels for any product requirements.
3. Long Equipment Life
  • Heavy-duty construction.
  • Minimal servicing required.
  • Easy to maintain.
  • Side-access door and walkway plank for easy maintenance of coils, fans and
    motors.
  • Filters at floor level are easy to maintain and replace.
  • Tube access cover doors to service heat exchanger tubes.
  • Long life heat exchanger.
  • 30+ year projected unit life.
4. Low Installation Cost
  • Fewer units per area: one unit can condition up to 150,000 ft2.
  • Installation does not require cranes or helicopters and no duct work required.
  • Only 1 gas piping run per unit.
  • Single-point electrical connection.
  • No bracing required for equipment.
  • Units are “portable”; if you move, the unit can be used in your new facility.
  • 3 men can erect the unit in _ day.
5. Engineering Support and Customer Service
  • Our experienced application engineers will design the optimum system for
    your building.
  • Since we have a variety of products to offer we can advise the best way to
    condition your building.
  • We determine the amount of heating, cooling and air volume required in the
    space.
  • We determine the quantity of units and best unit locations.
  • Provide start-up service technician.
  • 83 years of combined applications experience in buildings like yours.
  • Applications can be offered with a performance guaranty.
    6. Safety
  • UL?-listed and approved.
  • Manufactured and tested in a UL? Test Data Program.
  • Products of combustion are not discharged into the heated space.